floatdec.py

bincont = b"\x34\x83\x12\x6F"

def bitlist(inbytes):
    output = []
    for byte in reversed(inbytes):
        for i in range(0, 8):
            bit = byte & (1 << i)
            if bit:
                output.append(1)
            else:
                output.append(0)
    return output

def addbits(bits):
    out = 0
    for bit in reversed(bits):
        out = (out << 1) | bit
    return out

def fractional_add(bits):
    accum = 0
    for i, bit in enumerate(reversed(bits)):
        accum += bit*(1/(2**(i+1)))
    return accum

def decfloat(floatbytes):
    bits = bitlist(floatbytes)
    sign = bits[31]
    expb = bits[23:31]
    fractb = bits[0:23]
    exp = addbits(expb)
    fract = fractional_add(fractb)
    print(fractb, fract)
    return (-1)**sign * 2**(exp-127) * (1 + fract)

print(decfloat(bincont))